Rotary churn



(No Model.)

.G. A. STAFFORD.

- ROTARY GHUB'N. N0. 349,371. Patented Sept. 21, 1886.

Wan-woes 5] 0014 50; ,ziz/w/wag 4 of J 93, amwm N. PETERS,Photo-Lithograph", Wuhingtnn. ac,

UNITED STATES PATENT OFFICE;

GEORGE A. STAFFORDfOF DESDIMONIA, TEXAS.

ROTARY CHU RN.

BPECIIE'ICATION forming'part of Letters Patent N0.349,371, datedSeptember 21, 1886.

Application filed July 17, 1886. Serial No. $108,248.

To allwhom, it 'may concern.-

Be it known that I, GEORGE A. STAFFORD, a citizen of the United States,residing at Desdimonia, in the county of Eastland and State of Texas,havein vented certain new and useful Improvements in Rotary Ohurns; andI do hereby declare the following to be a full, clear, and exactdescription of theinvention, such as will enable others skilled in theart to which it appertains, to make and use the same.

This invention relates to that class of churns known as rotary churns,and has forits object to more thoroughly and expeditiously break theglobules of the cream or milk and release the butter particles therefromin churning, so as to produce butter very quickly with a minimumexpenditure of labor and time; and to this end the invention consists inthe novel construction and arrangement of the several parts thereof, aswill be hereinafter more particularly described, and specifically point-7 ed out in the claims.

In the accompanying drawings, to which reference is made, and whichfully illustrate my invention, Figure 1 is a side elevation, and Fig. 2a sectional view of the same.

A represents a hollow rectangular platform, upon which is cut out at thetop and closed portion a slot, a. Through this slot a plays the lowerend of acentrally-pivoted walking beam or lever, which will behereinafter referred to.

Upon each side of the platform A, and secured in any suitable manner attheir lower ends near the front thereof, are two standards, BB, to therear of which, at right angles to the same, is secured an upper andsmaller platform, 0, having cut thereon at its rear end a slot, 0, theslots 0 and c on the platforms 0 and A being in alignment with eachother, whereby I am enabled, by means of a walking-beam or lever, D, togive a rotary motion to the dashers and churn-body simultaneouslyinopposite directions. This walking-beam D is pivoted and has its fulcrumat d in the rear part of the platform 0, playing in the slot 0 in amanner similar to the lower end of the walking-beam D in the slot a ofthe platform A.

E E are two pitman-rods, each being connected at its rear end to thewalking-beam by means of eyes or staples secured therein, and

(No model.)

staples or eyes secured in each end of the walking-beam or lever D.

Secured between the standards B B, near their upper ends are twobrackets or pieces, e

e, projecting in frontor forwardly of thestandards B B, the front endsof each having bored therein two holes, 6 a, said holes being inalignment with each other,and through which the ends ofa crankshaft, F,connecting the forward end ofthe upperpitmaurod are loosely journaled. I

Secured to the upper and lower ends of the crank-shaft,and upon theoutside of the brackets c, are two balance-wheels, G G, thebalance-wheel G being alittlesmallerin diameter than that of G, securedto the lowerend of the crank-shaft F, these wheels serving the purposeof balancing and steadying the motion of the dasher.

J ournaled loosely in bearings in an upper and lower cross-bar, H H, infront of the platform A, is another crank-shaft, I, connecting the frontend of the lower pitman-rod E to the lower end of the walking-beam D,the connectionbeing similar to that of the upper pitmanrod. Secured uponthe upper end of the crank-shaft I is another and lower balancewheel, K,still larger in diameter than those previously described, The weight ofthis balance-wheel being just equal to the weight of the upperbalance-wheels, gives an equal and corresponding uniform steady motionto a churn-body, as the upper and smaller balancewheels do to thedasher. The lower balancewheel, K, has secured upon its upper face andcenter a flange, it, within which is stepped or placed the churn-body L,having a cover, Z, and within which body is placed the dasher M, theupper end or rod of which is connected and disconnected to the lower endof the upper crank-shaft, F, by means of a thimble, f, by means of whichthe dasher-rod is securely held when connected to the lower end of theupper crank-shaft, as clearly shown in Figs. 1 and 2 of the drawings.

The upper front cross-bar, H, of the platform A is made in two parts,onestationary and the other removable, or it can be made as a whole, asshown in the drawings, thatpart which is removable being held in placeupon the plat form by means of suitable pins passing through holes ineach end, the pins being withdrawn when it is deemed necessary to removethe churn-body for refilling the same with cream, or for emptying thecontents of the churn when butter is produced, or for cleaning, &c., asoocasion requires.

A bifurcated arm or handle, N, is detachably secured to the center ofthe walking-beam by means of pins or in any suitable manner.

If preferred, a handheld may be secured to or cut out in the upper endof the walking-beam, by which to operate it in lieu ofthc handle.

The operation is as follows: The body of the churn being sufficientlyfilled with cream for churning, itis put in its proper place upon thelower balanee-wheel, the bottom fitting snugly down within the flangeupon the center of the wheel, and the upper end of the dasher-rod be ingconnected by means of the thimble to the lower end of the upper crankshaft. The churn-body and dasher are then ready to receive the necessarymotion, which is imparted to them by the connecting mechanism, which isdone through the medium of the handle work ing up and down,thusgivingeaeh end ofthe walkingbeam an alternating forward and backwardstroke, thereby rotating the crank-shafts with which the pit-inanrodsare connected, thus giving a continuous rotary motion to the ehurn-bodyand dasher simultaneously and in opposite directions, agitating thecream thoroughly from all sides and from. top to bottom of theehurn-bodysimultaneously,consequent ly producing butter in a very shorttime and with but little expenditure of power.

My churn is easily worked, runs lightly, and

is simple in its construction and c-heaplymanufactured.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a churn, the combination of the sup portingframe, the walking-beampivoted thereon, the crank-shaftsjournaled in hearings in the rear partof the frame, pitmen connect ing the walking-beam with saidcrank-shafts, a dasher coupled to one of said shafts, and a churn-bodycarried by the other shaft and surrounding the dasher, substantially asset forth.

2. The combination of the supportingframe, the walking-beam, twocrank-shafts journaled in the rear part of said frame, means forconnecting the walking-beam. with said shafts, a balance-wheel anddasher carried by one olsnid shafts, a larger balance-wheel eonnected tothe other shaft, and a churn-body secured to said balance-wheel,substantially as set forth.

3. The combination of the frame A B (i, the walking-beam D, pivoted inthe front part of said frame, crankshaft F, carrying balance wheels G G,journaled in the rear part ofsaid frame, dasher M, coupled to saidshaft, cranl shaft I, carrying balaneewheel K, having flange 7:, thechurn L, secured in said flange, and the pitmen E E,substantially asdescribed.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE A. STAFFORD.

\Vitnesses:

D. H. Games, 0. M. \Vi-ncLu.

